US8110753B2 - Circuit board assembly - Google Patents

Circuit board assembly Download PDF

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Publication number
US8110753B2
US8110753B2 US12/081,099 US8109908A US8110753B2 US 8110753 B2 US8110753 B2 US 8110753B2 US 8109908 A US8109908 A US 8109908A US 8110753 B2 US8110753 B2 US 8110753B2
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Prior art keywords
circuit board
hole
electric wire
board assembly
fixed end
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US12/081,099
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US20090255721A1 (en
Inventor
Wei-Cheng Chen
Cheng-Chao Liao
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Universal Scientific Industrial Shanghai Co Ltd
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Universal Scientific Industrial Co Ltd
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Priority to US12/081,099 priority Critical patent/US8110753B2/en
Assigned to UNIVERSAL SCIENTIFIC INDUSTRIAL CO., LTD. reassignment UNIVERSAL SCIENTIFIC INDUSTRIAL CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHEN, WEI-CHENG, LIAO, CHENG-CHAO
Publication of US20090255721A1 publication Critical patent/US20090255721A1/en
Assigned to UNIVERSAL SCIENTIFIC INDUSTRIAL (SHANGHAI) CO., LTD. reassignment UNIVERSAL SCIENTIFIC INDUSTRIAL (SHANGHAI) CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: UNIVERSAL SCIENTIFIC INDUSTRIAL CO., LTD.
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00Apparatus or processes for manufacturing printed circuits
    • H05K3/30Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/306Lead-in-hole components, e.g. affixing or retention before soldering, spacing means
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09Shape and layout
    • H05K2201/09009Substrate related
    • H05K2201/09063Holes or slots in insulating substrate not used for electrical connections
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10227Other objects, e.g. metallic pieces
    • H05K2201/10287Metal wires as connectors or conductors
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10431Details of mounted components
    • H05K2201/10598Means for fastening a component, a casing or a heat sink whereby a pressure is exerted on the component towards the PCB
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10613Details of electrical connections of non-printed components, e.g. special leads
    • H05K2201/10742Details of leads
    • H05K2201/1075Shape details
    • H05K2201/10757Bent leads
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00Apparatus or processes for manufacturing printed circuits
    • H05K3/30Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/32Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
    • H05K3/34Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
    • H05K3/3405Edge mounted components, e.g. terminals
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00Apparatus or processes for manufacturing printed circuits
    • H05K3/30Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/32Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
    • H05K3/34Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
    • H05K3/3447Lead-in-hole components

Definitions

  • This invention relates to a circuit board assembly, more particularly to a circuit board assembly including a circuit board and an electric wire soldered to the circuit board and formed with an inflection region.
  • FIGS. 1 and 2 illustrate a conventional circuit board assembly that includes a circuit board 1 and an electric wire 2 having a fixed end 201 soldered to the circuit board 1 through a solder 3 , a curved segment 203 extending from the fixed end 201 to a through-hole 101 in the circuit board 1 , and a free segment 202 extending from the curved segment 203 .
  • the conventional circuit board assembly is disadvantageous in that the fixed end 201 of the electric wire 2 is likely to be strained when the free segment 202 of the electric wire 2 is pulled by an external force (referring to the arrow in FIG. 2 ). As a consequence, the fixed end 201 of the electric wire 2 tends to break off from the solder 3 or the solder 3 tends to break after a period of use.
  • an object of the present invention is to provide a circuit board assembly that can overcome the aforesaid drawback associated with the prior art.
  • a circuit board assembly comprises: a circuit board having opposite first and second surfaces and formed with a first through-hole defined by a hole-defining wall that extends between and that terminates at the first and second surfaces and that cooperates with the first and second surfaces to define first and second turns, respectively, the circuit board further having an abutting wall that extends between and that terminates at the first and second surfaces, that is spaced apart from the hole-defining wall, and that cooperates with the second surface to define a third turn; and an electric wire having a fixed end that is soldered to the circuit board, extending through the first through-hole, and passing over the first, second and third turns of the circuit board so as to form an inflection region between the first and second turns.
  • FIG. 1 is a fragmentary perspective view of a conventional circuit board assembly
  • FIG. 2 is a fragmentary partly sectional view of the conventional circuit board assembly
  • FIG. 3 is a fragmentary perspective view of the first preferred embodiment of a circuit board assembly according to this invention.
  • FIG. 4 is a fragmentary partly sectional view illustrating a state where an electric wire of the first preferred embodiment is pulled by an external force
  • FIG. 5 is a fragmentary perspective view of the second preferred embodiment of the circuit board assembly according to this invention.
  • FIG. 6 is a fragmentary partly sectional view illustrating a state where the electric wire of the second preferred embodiment is pulled by an external force.
  • FIGS. 3 and 4 illustrate the first preferred embodiment of a circuit board assembly according to the present invention.
  • the circuit board assembly includes: a circuit board 10 having opposite first and second surfaces 11 , 12 and formed with a first through-hole 14 defined by a hole-defining wall 14 ′ that extends between and that terminates at the first and second surfaces 11 , 12 and that cooperates with the first and second surfaces 11 , 12 to define first and second turns 111 , 112 , respectively, the circuit board 10 further having an abutting wall 13 that extends between and that terminates at the first and second surfaces 11 , 12 , that is spaced apart from the hole-defining wall 14 ′, and that cooperates with the second surface 12 to define a third turn 113 ; and an electric wire 20 having a fixed end 21 that is soldered to the circuit board 10 through a solder 30 , extending through the first through-hole 14 , and passing over the first, second and third turns 111 , 112 , 113 of the circuit board 10 so as to form an inflection
  • the electric wire 20 has a first curved segment 23 extending from the fixed end 21 to the inflection region 201 , and a second curved segment 24 extending from the inflection region 201 to the third turn 113 of the circuit board 10 .
  • the first and second curved segments 23 , 24 are bent in opposite directions, and are disposed at the first and second surfaces 11 , 12 , respectively.
  • the abutting wall 13 of the circuit board 10 is defined by a peripheral end 102 of the circuit board 10 , and further cooperates with the first surface 11 to define a fourth turn 114 .
  • the electric wire 20 further passes over the fourth turn 114 , and further extends repeatedly through the first through-hole 14 in the circuit board 10 so as to form an open loop 25 trained on a portion 101 of the circuit board 10 that extends from the hole-defining wall 14 ′ of the first through-hole 14 to the abutting wall 13 .
  • the circuit board 10 is further formed with a retaining hole 15 .
  • the fixed end 21 of the electric wire 20 is fixed in the retaining hole 15 through the solder 30 .
  • the loop 25 will be continuously reduced in size until it is tightly sleeved on the portion 101 of the circuit board 10 (see FIG. 4 ), thereby preventing the first curved segment 23 of the electric wire 20 from being undesirably strained.
  • FIGS. 5 and 6 illustrate the second preferred embodiment of the circuit board assembly according to this invention.
  • the second preferred embodiment differs from the previous embodiment in that the circuit board 10 is further formed with a second through-hole 17 defined by a hole-defining wall 17 ′ that defines the abutting wall 13 of the circuit board 10 .
  • the electric wire 20 will be tightly trained on a portion 101 of the circuit board 10 that extends from the hole-defining wall 14 ′ of the first through-hole 14 to the hole-defining wall 17 ′ of the second through-hole 17 , thereby preventing the fixed end 21 of the electric wire 20 from being undesirably strained.

Abstract

A circuit board assembly includes: a circuit board having opposite first and second surfaces and formed with a first through-hole defined by a hole-defining wall that extends between and that terminates at the first and second surfaces and that cooperates with the first and second surfaces to define first and second turns, respectively, the circuit board further having an abutting wall that extends between and that terminates at the first and second surfaces and that cooperates with the second surface to define a third turn; and an electric wire having a fixed end that is soldered to the circuit board, extending through the first through-hole, and passing over the first, second and third turns of the circuit board so as to form an inflection region between the first and second turns.

Description

BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a circuit board assembly, more particularly to a circuit board assembly including a circuit board and an electric wire soldered to the circuit board and formed with an inflection region.
2. Description of the Related Art
FIGS. 1 and 2 illustrate a conventional circuit board assembly that includes a circuit board 1 and an electric wire 2 having a fixed end 201 soldered to the circuit board 1 through a solder 3, a curved segment 203 extending from the fixed end 201 to a through-hole 101 in the circuit board 1, and a free segment 202 extending from the curved segment 203. The conventional circuit board assembly is disadvantageous in that the fixed end 201 of the electric wire 2 is likely to be strained when the free segment 202 of the electric wire 2 is pulled by an external force (referring to the arrow in FIG. 2). As a consequence, the fixed end 201 of the electric wire 2 tends to break off from the solder 3 or the solder 3 tends to break after a period of use.
SUMMARY OF THE INVENTION
Therefore, an object of the present invention is to provide a circuit board assembly that can overcome the aforesaid drawback associated with the prior art.
According to this invention, a circuit board assembly comprises: a circuit board having opposite first and second surfaces and formed with a first through-hole defined by a hole-defining wall that extends between and that terminates at the first and second surfaces and that cooperates with the first and second surfaces to define first and second turns, respectively, the circuit board further having an abutting wall that extends between and that terminates at the first and second surfaces, that is spaced apart from the hole-defining wall, and that cooperates with the second surface to define a third turn; and an electric wire having a fixed end that is soldered to the circuit board, extending through the first through-hole, and passing over the first, second and third turns of the circuit board so as to form an inflection region between the first and second turns.
BRIEF DESCRIPTION OF THE DRAWINGS
Other features and advantages of the present invention will become apparent in the following detailed description of the preferred embodiments of the invention, with reference to the accompanying drawings, in which:
FIG. 1 is a fragmentary perspective view of a conventional circuit board assembly;
FIG. 2 is a fragmentary partly sectional view of the conventional circuit board assembly;
FIG. 3 is a fragmentary perspective view of the first preferred embodiment of a circuit board assembly according to this invention;
FIG. 4 is a fragmentary partly sectional view illustrating a state where an electric wire of the first preferred embodiment is pulled by an external force;
FIG. 5 is a fragmentary perspective view of the second preferred embodiment of the circuit board assembly according to this invention; and
FIG. 6 is a fragmentary partly sectional view illustrating a state where the electric wire of the second preferred embodiment is pulled by an external force.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Before the present invention is described in greater detail with reference to the accompanying preferred embodiments, it should be noted herein that like elements are denoted by the same reference numerals throughout the disclosure.
FIGS. 3 and 4 illustrate the first preferred embodiment of a circuit board assembly according to the present invention. The circuit board assembly includes: a circuit board 10 having opposite first and second surfaces 11, 12 and formed with a first through-hole 14 defined by a hole-defining wall 14′ that extends between and that terminates at the first and second surfaces 11, 12 and that cooperates with the first and second surfaces 11, 12 to define first and second turns 111, 112, respectively, the circuit board 10 further having an abutting wall 13 that extends between and that terminates at the first and second surfaces 11, 12, that is spaced apart from the hole-defining wall 14′, and that cooperates with the second surface 12 to define a third turn 113; and an electric wire 20 having a fixed end 21 that is soldered to the circuit board 10 through a solder 30, extending through the first through-hole 14, and passing over the first, second and third turns 111, 112, 113 of the circuit board 10 so as to form an inflection region 201, i.e., a transition region where such a change from convex to concave or conversely takes place, between the first and second turns 111, 112.
In this embodiment, the electric wire 20 has a first curved segment 23 extending from the fixed end 21 to the inflection region 201, and a second curved segment 24 extending from the inflection region 201 to the third turn 113 of the circuit board 10. The first and second curved segments 23, 24 are bent in opposite directions, and are disposed at the first and second surfaces 11, 12, respectively.
In this embodiment, the abutting wall 13 of the circuit board 10 is defined by a peripheral end 102 of the circuit board 10, and further cooperates with the first surface 11 to define a fourth turn 114. The electric wire 20 further passes over the fourth turn 114, and further extends repeatedly through the first through-hole 14 in the circuit board 10 so as to form an open loop 25 trained on a portion 101 of the circuit board 10 that extends from the hole-defining wall 14′ of the first through-hole 14 to the abutting wall 13.
The circuit board 10 is further formed with a retaining hole 15. The fixed end 21 of the electric wire 20 is fixed in the retaining hole 15 through the solder 30.
In use, when a free segment 22 of the electric wire 20 is pulled by an external force (referring to the arrow in FIG. 4), the loop 25 will be continuously reduced in size until it is tightly sleeved on the portion 101 of the circuit board 10 (see FIG. 4), thereby preventing the first curved segment 23 of the electric wire 20 from being undesirably strained.
FIGS. 5 and 6 illustrate the second preferred embodiment of the circuit board assembly according to this invention. The second preferred embodiment differs from the previous embodiment in that the circuit board 10 is further formed with a second through-hole 17 defined by a hole-defining wall 17′ that defines the abutting wall 13 of the circuit board 10.
In use, when an external force is applied to the free segment 22 of the electric wire 20 (see FIG. 6), the electric wire 20 will be tightly trained on a portion 101 of the circuit board 10 that extends from the hole-defining wall 14′ of the first through-hole 14 to the hole-defining wall 17′ of the second through-hole 17, thereby preventing the fixed end 21 of the electric wire 20 from being undesirably strained.
By forming the inflection region 201 of the electric wire 20 and by training the electric wire 20 on the portion 101 of the circuit board 10 of the circuit board assembly of this invention, the aforesaid drawback associated with the prior art can be eliminated.
While the present invention has been described in connection with what are considered the most practical and preferred embodiments, it is understood that this invention is not limited to the disclosed embodiments but is intended to cover various arrangements included within the spirit and scope of the broadest interpretations and equivalent arrangements.

Claims (2)

1. A circuit board assembly comprising:
a circuit board having opposite first and second surfaces, an outer peripheral edge that interconnects said first and second surfaces and that defines an abutment wall, a first through-hole extending through said first and second surfaces near said abutment wall, a retaining hole extending through said first and second surfaces, said first through-hole being disposed between said retaining hole and said abutment wall; and
an electric wire having a fixed end that is soldered to said circuit board at said retaining hole, a first curved segment connected to said fixed end and extending over said first surface from said retaining hole to said first through-hole, an inflection region connected to said first curved segment and extending through said first through-hole from said first surface to said second surface, a second curved segment connected to said inflection region and extending over said second surface from said first through-hole to said abutment wall, and an open loop that is connected to said second curved segment and that turns around said abutment wall to extend back to said first surface and to pass through said first through-hole from said first surface to said second surface,
wherein said circuit board has no portion that extends beyond said open loop and that extends around one side of said open loop opposite to said abutment wall.
2. The circuit board assembly of claim 1, wherein said fixed end extends into said retaining hole.
US12/081,099 2008-04-10 2008-04-10 Circuit board assembly Active 2030-08-08 US8110753B2 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130050927A1 (en) * 2011-08-29 2013-02-28 Hon Hai Precision Industry Co., Ltd. Computer chassis construction
US20140103794A1 (en) * 2011-05-20 2014-04-17 Panasonic Corporation Light
CN104315374A (en) * 2014-10-10 2015-01-28 广东祥新光电科技有限公司 Module for LED (light-emitting diode) lamp
US10224670B2 (en) * 2017-07-17 2019-03-05 Facebook Technologies, Llc Circuit board with anchor cleat for a connector
WO2020182409A1 (en) * 2019-03-12 2020-09-17 Endress+Hauser Flowtec Ag Field device of process measurement technology, measuring sensor and method for producing a coil apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016076618A (en) * 2014-10-07 2016-05-12 パナソニックIpマネジメント株式会社 Circuit board and electrical equipment
EP3890459A1 (en) * 2020-04-03 2021-10-06 Hamilton Sundstrand Corporation Microswitch based position sensor with harness relief for motorized valve

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3419670A (en) * 1966-11-28 1968-12-31 Admiral Corp Strain relief for line cords
US6093036A (en) * 1997-12-05 2000-07-25 Matsushita Electric Industrial Co., Ltd. Terminal connection device for power supply circuit
US6663414B2 (en) * 2000-06-06 2003-12-16 Funai Electric Co., Ltd. Lead wire-processing structure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3419670A (en) * 1966-11-28 1968-12-31 Admiral Corp Strain relief for line cords
US6093036A (en) * 1997-12-05 2000-07-25 Matsushita Electric Industrial Co., Ltd. Terminal connection device for power supply circuit
US6663414B2 (en) * 2000-06-06 2003-12-16 Funai Electric Co., Ltd. Lead wire-processing structure

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140103794A1 (en) * 2011-05-20 2014-04-17 Panasonic Corporation Light
US9091398B2 (en) * 2011-05-20 2015-07-28 Panasonic Intellectual Property Management Co., Ltd. Light
US20130050927A1 (en) * 2011-08-29 2013-02-28 Hon Hai Precision Industry Co., Ltd. Computer chassis construction
CN104315374A (en) * 2014-10-10 2015-01-28 广东祥新光电科技有限公司 Module for LED (light-emitting diode) lamp
US10224670B2 (en) * 2017-07-17 2019-03-05 Facebook Technologies, Llc Circuit board with anchor cleat for a connector
WO2020182409A1 (en) * 2019-03-12 2020-09-17 Endress+Hauser Flowtec Ag Field device of process measurement technology, measuring sensor and method for producing a coil apparatus
CN113544472A (en) * 2019-03-12 2021-10-22 恩德斯+豪斯流量技术股份有限公司 Field device for process measurement technology, measurement sensor and method for producing a coil arrangement
US11835375B2 (en) 2019-03-12 2023-12-05 Endress+Hauser Flowtec Ag Field device of process measurement technology, measuring sensor and method for producing a coil apparatus

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